Going organic 21 years ago was more difficult than it sounds. Prince Charles explained the challenge at an event. "We had to start from scratch – literally. And we had to do it by persuading a few courageous producers that it was worth their while to go through the risky and exhaustive process of converting their entire operation to an organic regime.”

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His farm is called the Duchy Home Farm, which grew beets, carrots, barley, milk, mustard, parsnips, oats and wheat.

The first product the company launched was the Oaten Biscuit, which is still a hugely popular item.

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Prince Charles was very involved in the creation of the Oaten Biscuit. He sampled more than 100 varieties of the product before finding the perfect combination of savory and sweet, buttery and crumbly, according to Jim Walker, the joint managing director of Walkers Shortbread, which is the Scottish company behind the Oaten Biscuit.

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The Oaten Biscuit has reached 70 million dollars in sales.

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At a recent event, Prince Charles told the audience that the Oaten Biscuit brand is worth more than 115.3 million dollars.

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The company now has more than 230 products and is sold in a variety of countries from Australia to Japan.

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It's no surprise that Prince Charles has entered the food world. He grew up farming on verdant estates in Sandringham and Balmoral. He always says that he would have been a farmer if he weren't a prince.

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Prince Charles is also a Duke of Cornwall, which has placed him in the position to launch several programs there to address the destructive aspects to modern farming and stop it from harming the communities in the countryside.

At a recent anniversary event, Prince Charles noted how much money his company has donated to charity, "Who would have thought that 21 years later, Oaten Biscuit...would have donated over [$17.6 million ] to charitable causes?"

Prince Charles approves all the products including Stilton cheese, fruit chutneys and smoked salmon. He frequently samples the ingredients.

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In 2009, Duchy Originals struck a licensing deal with Waitrose, which gave the British supermarket chain rights to sell Duchy Originals products. However, Duchy Originals has recently become available in America.

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During the recent economic decline, consumers shied away from luxury goods, which affected Duchy Originals, but after they partnered with Waitrose, Prince Charles’s company bounced back.